What Is Force It takes a force to

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What Is Force?

What Is Force?

It takes a force to move something.

It takes a force to move something.

A force is a push or a pull. . . that causes an object

A force is a push or a pull. . . that causes an object to move, stop, or change direction.

When you push an object, it moves away from you.

When you push an object, it moves away from you.

When you pull an object, it moves toward or with you.

When you pull an object, it moves toward or with you.

Is this a push or a pull?

Is this a push or a pull?

Is this a push or a pull?

Is this a push or a pull?

Is this a push or a pull?

Is this a push or a pull?

Is this a push or a pull?

Is this a push or a pull?

Is this a push or a pull?

Is this a push or a pull?

Is this a push or a pull?

Is this a push or a pull?

Is this a push or a pull?

Is this a push or a pull?

Some Types of Forces • Gravity • Friction • Magnetism • Erosion (wind and

Some Types of Forces • Gravity • Friction • Magnetism • Erosion (wind and water)

Magnetism - The force of repelling or attraction between two poles of a magnet.

Magnetism - The force of repelling or attraction between two poles of a magnet.

Gravity

Gravity

Gravity: the force that pulls all objects in the universe towards each other’s center.

Gravity: the force that pulls all objects in the universe towards each other’s center.

Gravity – The force that pulls all objects downward toward Earth’s center.

Gravity – The force that pulls all objects downward toward Earth’s center.

Gravity The mass of an object determines how much gravity that object has. For

Gravity The mass of an object determines how much gravity that object has. For example: The moon and Earth are pulling on each other. The Earth is bigger than the moon so its gravitational pull is stronger. That is why the moon orbits the Earth. What would happen if the moon was bigger than the Earth?

Friction

Friction

Friction. . . a force that acts against something when two surfaces rub against

Friction. . . a force that acts against something when two surfaces rub against each other.

Friction – Slows objects down and makes them stop.

Friction – Slows objects down and makes them stop.

A softball player sliding into home on the rough dirt has a lot of

A softball player sliding into home on the rough dirt has a lot of friction and can stop.

A sled on smooth ice will keep sliding and is hard to stop because

A sled on smooth ice will keep sliding and is hard to stop because it has only a little friction.

And sometimes forces work together! Which two forces are working together here? Gravity &

And sometimes forces work together! Which two forces are working together here? Gravity & Friction!

What causes the leaves to fall to the ground during the autumn season? A.

What causes the leaves to fall to the ground during the autumn season? A. Magnetism B. A pushing force C. Gravity D. Erosion

The moving of an object is called -A. force B. friction C. magnetism D.

The moving of an object is called -A. force B. friction C. magnetism D. gravity

Which of the following is an example of a force that is different from

Which of the following is an example of a force that is different from gravity? A. an apple dropping to the floor B. a boy slamming a door C. a leaf falling to the ground D. water dripping from a faucet

What force is represented in the above picture? A. A pushing force B. A

What force is represented in the above picture? A. A pushing force B. A pulling force C. A magnetic force D. Both A and C

Forces in My Everyday Life! Pulling Forces Pushing Forces

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